Yates, C. S. J. (1992). May I help you: English in tourism. New York: Prentice-Hall.
シカゴスタイル引用形Yates, Christopher St J. May I Help You: English in Tourism. New York: Prentice-Hall, 1992.
MLA引用形式Yates, Christopher St J. May I Help You: English in Tourism. New York: Prentice-Hall, 1992.
警告: この引用は必ずしも正確ではありません.